Method of and apparatus for gluing sheets edge to edge



. A. ELMENDORF. METHOD 0F AND'APPARATUS FOR GLUING SHEETS EDGE T0 EDGE.

v APPLICATION FILED JUNE l, 1920. AQBQD Patented sept. 12, w22.

anar/tt are.

.ARMIN ELMENDORF, F MADISON, WISCONSIN, ASSIGNOR. T0 HASKELITE MANUFAC- 'TUBING CORPORATION, A CORPORATION OF NEW YORK.

METHOD 0F AND APARAT'US FOR GILUING- SHEETS, EDG-E T0 EDGE.

Application filed .Tune l,

To all whom it may concern Be it known that l, ARMIN ELMENDORF, la Vcitizen of the United States, residing at Madison, county of Dane, State of Wiscon- 1920. Serial No. 385,539.

planes of the sheets; glue having` first been placed on the edges to be joine together; and, after the stack has been completed,

t sin, have' invented a certain new and useful pressure being applied to each sheet at one improvement in Methods of and Apparatus for Gluing Sheets Edge to'Edge, and de- Clare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference strips glued edge to edge may be effectively rtion with the produced in a cheap and simple manner Without requiring apparatus except 0f -the simplest kind, and without taking up 'a large door space in making quantity production.

Viewed in another of its aspects, my invention may be 4said to have for its object to produce a simple and novel apparatus for gluing sheets edge to edge.

The various features of novelty whereby my invention is characterized will hereina ter be pointed outwith particularity in the' claims; but, for a full understanding of my invention and of its objects and advantages, reference may be had to the following detailed description taken in connecaccompanying drawing,

' wherein Figure 1 is a top plan view of a fragment of a stack of composite sheets in the process of being glued, the parts being brken away to expose other parts;

Fig. 2 is a. View Similar einig. .1, muss thereon.

taken approximately on line 1 4 of Fig. 1,

and showing only a fragment of the lower end of the stack; and Fig. l5 is a section on line 5-5 of Fig. 4,

the upper grill being omitted.

ln carrylng out my inventionvl build up or more points in a direction transverseto laterallyout of 'the stack and thus force together the edges to be joined. A Referring to the drawing, l represents fixed any` desired number of vertical rods of which one, indicated at 2, is shown. spacing elements are conveniently made in the form of grids; having projecting ends 3, perforated so that they may be slipped down over the rod or rods, and they are con structed in any suitable way so as to permit an engaged sheet to slide readily thereon. In the arrangement shown, each grid is made up of a series of parallel hars, 4l, fastened together by suitable cross bars, 5, set into' the The,

@Ei Suitable' Pila-tfOrm or support to ywhich are-" bars i so as to have their exposed fases tlueh with the corresponding faces of the latter.A

rl`he part 3 may be simply an extension of,

one of the bars, d, which is made lon er than the rest of the corresponding bars, or this purpose. @n the upper and under side of each of the bars d are placed one or, more small rods or wires, 6, extending longitudinally of the same; these Small rods or wires lserving as rails on which the work rests and permitting the workto slide thereon without meeting too much lfrictional resistance.

will of course be understood that the spacersl may be made in any other suitable way so as to permit a circulation of air through the same and leave the work free to slide easily ln order to prduce the glued sheets, one .ofthe grids, or a plurality thereof arranged side by side, is laid on the base or support, with its extension, 3 engaged with the corresponding upright rod, 2. @n the grid or meA .I

grids are then laid a plurality of pieces, A,

out of whichv a sheet is to be formedj glue' f suitable.

n he pieces vare laid so as to extend across the supporting" having first been applied in an way to the edges to be joined.

rails. Between the piece nearest the stationary nprightrrod and the rod is placed a a. stack in which composite sheets of pieces metalbar, 7, having a thickness not greater laid edge to edge alternate with spacing dethan the thickness of the work outof which vices whichwill permit ;the sheets toslide the' sheet is to be formed. After the number' iet thereon when pressure is applied to the edgesr of pieces required for one sheet have been me sheet is to be made then haveglue applied to their ledges and are laid edge to edge lon top of the second grid or series of grids, a

bar of metal, 7, being laid as the' linal element beside. thel sheet as heretofore described. In this way 'a stack of any desired height may be built up, containing the component parts of fifty `or more sheets, if desired. After the stack has been completed, pressure is applied to the edge of each layer of pieces, through the metal bar, in a direction tending to force the layer laterally out .of the stack in a directionat right anur es to the joints in the layer; the metal bars: servj ing simply to distribute the pressure so that it will not be localized at a single point and cause the edge of the layer or rudimentary sheet to be crushed.' The ressure may conveniently be applied by placing a lever between the upright rod and one of the pressure distributing bars after another and,

' using the upright rod as a fulcrum, forcing one layer afterranother away from the upright rod. In the arrangement shown the pressure-creating element-is a lever, 8, having on one end a hook, 9, the hook increasing gradually in width from the free end toward the base where it is joined to the lever. When the stack is formed, the parts are so positioned that the small end of the hook may be inserted between the rod 2 and any one of the Fpressure-distributino' bars as indicated in igs. land 3. Beginning with the lowermost layer of pieces or rudimentary sheet, as illustrated in Fig. 3, the lever, after being hooked upon the upright rod, is swun on this rod as an axis into the position in icated in Fig. 2, the hook acting as a wedge which gradually forces its way in between the upright rod' andthe ad- '4'5 jacent pressure bar, and forces the latter bar inwardly. As the pressuredistributing bar moves inwardly it of course pushes thevwork In order to insure that the joints in a layer will all beperfectly closed it isdesirable that at least all of thepieces" except .the 4one .farthest removed'from the 'stationaryfupright rod be caused t move ywhen the pressure-,is applied and, while it is not essential, lit will probably be desirable that even the most remote piece be moved somewhat in order to insure that the-"pieces behind it have traveled 4far enough to close all ofthe joints. Since the pieces formin each layer will be laid in contact with eac other as the stack is being built, no very large movement of any laye' or its constit` nent elements is requiredin order to secure the desired tightness of the joints andtherefore the ca'm lever need only be designed to produce a movement of an inch or two' in the nearest element of a layer five or six feet long. Where there are a plurality of stationary upright rods there should be a cam lever for each rod and -all of the cam levers shouldA be operated in unison. After the first layer has been acted on the operation is repeated in connection with one layer after the other until the top of the stack is reached. t p

The weight of the stack is suttlicient to producel the frictional resistance to.movement of the layers in the lower portion of the stack sullici'ently to insure closed joints.. As the top of the stack is approached, it may be found desirable to lay weights on top of the stack so that the several u-pper layers will not respond so freely to the action of open where the edges to be joined do not originally contact with each other at all points.

After thevoperations heretofore described have been completed, the stack is permitted 'to stand until the glue has set and it is then torn down and the apparatus employed in the building thereof may be utilized to form another stack.

' the cam levers as to' leave joints partially Y.

if desired, the working face of the @am leverv may be grooved in the longitudinal with parti'cul'arity only a single preferred 5 form of my invention, I do not desire to be limited to they exact structural details thusl illustrated;l and described; but intend to cover all forms and arrangements which sure to one edge only of each of said layers in a .direction at right angles to thejoint therein to move them bodily along the spacers. v

2. The method of producing sheets out of pieces glued edge to edge, which consists in placing glue on lthe edges to be joined, formcome within the terms employed in the dei- .i l

my inventionv constituting the apy v 1.15v

ing a stack of layers of such pieces placed edge to edge, said layers alternating with spacing devices anchored against movement in a direction transverse to the joints in said pieces, and then .applying pressure to one edge only of each layer in a direction transverse to said joints so as to push said layer along the spacing devices bodily.

3. rEhe method of producing sheets out of pieces glued edge to edge, which consists in placing glue on the edges to be joined, forming a stack of layers of such pieces placed edge to edge, 'alternating said layers with spacing devices having narrow spaced supporting 1surfaces extending transversely of said joints and anchored against movement lengthwise of said supporting surfaces, and applying pressure to one edge only of each of Said layers in a direction parallel With said supporting surfaces sulicient to cause each piece constituting the layer to be pressed firmly in Contact with the adjacent piece or pieces. l

ln testimony whereof, l sign this specification.

ARMIN ELMENDORF 

